I have read the sentence:
Qual è la differenza tra voler bene e amare?
I know that there is an apocope at the end of the verb "volere" in this sentence. Is it required or optional?
Is euphony the motivation of this apocope? Given that euphony principles are arbitrary in each language ("to sound good" is subjective), it is not clear to me which cacophony is prevented here by removing the final E. Could someone explain?